I'm looking at using one this companies inline fans
Soler & Palau Commercial Centrifugal, Axial, Propeller, Exhaust and Supply Fans - Soler and Palau - HVACQuick.com
Either the td-150 or td-200
If I use the 200 I'll need a 8" to 6" reducer to work with my cooltube.
There won't be any 90...